If used for the final destination, then the address or POI coordinates returned by the search provider is closer to the alley than the street. Depending on the neighborhood and where visitors should be directed to get to your location, the private rd/alley may be appropriate or not.

In Chicago, the default is generally not. We've had someone recently jump from editing level 1 to 4 rather quickly seemingly doing nothing but activating alley turns. Alleys here are usually applicable for homeowners with garages, who already know the last few blocks to the destination.

I tell people using Waze to never count on the last few blocks; only that it might know more about traffic conditions and get them to an area faster. In the past 3 weeks, I've been misrouted to alleys for final destinations twice in Chicago.

There's no reason to restrict turns into an alley if the alley is properly marked as a PLot road. Red arrows are too inviting to people to try to fix something.

There's also nowhere in the editing standards that say that an Alley should have any name unless there is a street sign indicating a name. There is no practical purpose for putting an "Alley" label on an alley.

Last night I was using Waze for some navigation around Chicago and it told me that driving down an alley was the most efficient route. And maybe it was. But it was an alley with large garbage bins on each side, a narrow bumpy road, and a few homeless people in it minding their own business.

I'm not saying that an alley isn't a possible route but it is one that should generally be avoided. Is there a way streets can be labeled as alleys with an option of "Avoid alleys"?

The earlier posts in this thead suggest the routing is due to maps being crafted incorrectly. It is not an inherent weakness in Waze. If you have knowledge of the area, consider becoming a map editor to improve the maps.

Per https://wiki.waze.com/wiki/Illinois#Alleys "As a general rule, alleys should not be mapped. They clutter the map and can cause routing issues." Chicago alleys should be removed, it as much quicker to remove them than to move 100,000 address pins.